Keep Coding

Hope someone out there using Google Cloud App Engine and Stackdriver monitoring. I got services up and running on my app engine, have been using them. Stackdriver Trace analysis provides nice daily analysis reports but its almost useless as it hits only the root ("/") ..
When I try to gather trace for a specific URI, I keep getting this error which I know 100% wrong. I got my app engine up and running and using it for sure. What am I missing here ..

The reports are automatically generated for the three most popular URLs that pass a certain threshold of traffic, so I suspect that the non-root URLs haven't had enough traffic to trigger this.
However, you can press the "New Report" button at the top of the page to generate an analysis report for any URL. You'll also be able to select the A/B comparison criteria to compare across versions of your application or different time spans. Reports typically only take a few seconds to generate.